ARCH, ARCHED
NOUNS
1618 ► CAMBER the condition of being slightly arched or convex above
1696 ► ARCUATION a curving into the shape of an arch
1731 ► ARCUATURE a bowing or bending of an arch → obs.
VERBS
1623 ► CAMERATE to make an arch, to vault → obs.
1627 ► CAMBER to be or become slightly arched or curved so that the centre is higher than the ends